The product is widely used in transportation and public buildings such as optoelectronic communication, power, aviation, aerospace, automobiles, high-speed rail, etc.
The selection of molding materials to a certain extent determines the quality of SMC molded plastic products. Choosing appropriate raw materials can meet the special performance requirements of the products, and the molding process is also the top priority in manufacturing molded parts. Firstly, the raw material composition of SMC molding material was introduced, including resin, initiator, low shrinkage additive, chemical thickener, internal release agent, coloring agent, and reinforcement material. The performance requirements of each component were also briefly introduced; Secondly, the molding process of SMC molding materials was discussed in layers, including the types and structures of the film making units, The production process of SMC molded materials, SMC molded material molding equipment and process, and the problems existing in SMC molded material products. This article draws on several foreign improvement measures, including surface paint bubbles, solvent suction, high density, environmental pollution, and the improvement of automotive parts production lines; Finally, a brief discussion was made on the industrial application and recycling of SMC molding materials. I hope everyone can have a new understanding of SMC molded composite materials through this article.